Base Difficulty

Base difficulty: Level 290 edit

Level distribution for noun (process_event): 19: 2 20: 1 196: 26 285: 25 289: 27 290: 29 300: 1 330: 2 350: 3 360: 1 370: 1 380: 1 405: 9 450: 1 460: 1 470: 1 476: 1 1000: 2 1010: 6 1020: 6 1030: 6 1040: 12 1050: 18 1060: 5 1070: 12 1080: 1 1110: 2 1120: 10 1130: 7 1202: 1 1204: 1 1210: 1 1211: 1 1216: 1 1399: 118

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 595 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A1 (1 of 6) 800

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 379.77 239 80% 290 downrated 2
20th_books 502.63 198 80% 241 downrated 2
wiki_math 66.52 1735 80% 1451 2
wiki_geography 146.20 947 80% 927 2
wiki_biology 37.24 2888 80% 3610 downrated 1
wiki_modern_life 144.27 1033 80% 987 2
wiki_arts 122.63 1161 80% 1108 2
wiki_society 143.89 1074 80% 952 2
wiki_linguistics 109.20 1355 80% 1141 2
wiki_physical_science 56.83 2027 80% 2534 downrated 1
wiki_history 110.99 960 80% 1200 downrated 1
early_modern_science 384.24 224 80% 267 downrated 2
religious_translated 177.31 569 80% 596 downrated 2
cooking 261.42 461 80% 576 downrated 1
legal_scotus 396.19 229 80% 279 downrated 2
eu_parliament_debates 618.58 160 80% 193 downrated 2
openstax_science 109.72 1038 80% 1298 downrated 1
openstax_society 170.97 731 80% 798 downrated 2
wpa_life_histories 418.40 235 80% 285 downrated 2

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.